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Fixed couple of regex problems [there are still others]

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CEisenhofer 2026-03-18 14:28:53 +01:00
parent b1bae695e6
commit ab53889c10
11 changed files with 392 additions and 382 deletions
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9
src/smt/seq/seq_parikh.cpp
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@ -353,8 +353,15 @@ namespace seq {
if (seq.re.is_complement(re_expr, inner))
return minterm_to_char_set(inner).complement(max_c);
// intersection: characters present in both sets
// union: characters present in either set
expr* r1 = nullptr, *r2 = nullptr;
if (seq.re.is_union(re_expr, r1, r2)) {
char_set cs = minterm_to_char_set(r1);
cs.add(minterm_to_char_set(r2));
return cs;
}
// intersection: characters present in both sets
if (seq.re.is_intersection(re_expr, r1, r2))
return minterm_to_char_set(r1).intersect_with(minterm_to_char_set(r2));